
MENU:
0: Exit to the main menu.
1: Invoke hardcopy making utility.
   If you just get back from auxiliary layout and would like
   to have the changes just made in the layout to show up on
   the hardcopy, redraw the plot before invoking the hardcopy.
2: Invoke auxiliary layout utility.
3: Plot another file.
4: Plot the next frame if any.
5: Plot the previous frame if any.
6: Redraw the current frame.
@: Plot a specific frame. Prompt for frame number will follow.
$: Spawn a system subprocess.
PF1: Invoke hardcopy making utility without the page setup menu.
PF2: Invoke this help menu.
PF3: Plot another file.
PF4: Spawn a system subprocess.
